I just played a bit with the new V8 GA release. On my XP box it seems that in a vanilla image the flat toolbars in the Transcript or any other window only act on double clicking a button. The buttons don't even visually react to a single click.

I opened a case 40578 and sent a change which moves the 'use emulated toolbar' option from the options menu of the class browsers to the options menu of the transcript and makes selecting of that option a global change.

The error is back again in a plain VA 8.0.1 Image on Win XP SP3: Toolbar buttons don't react on click events. YOu need to double click all buttons.

Once the option "use emulated toolbars" is enabled, all is fine. I guess if there is some logic or effort problem behind this behaviour, it would be better to enable this option by default, at least on XP...